[deliverable/linux.git] / include / net / netfilter / nf_log.h

#ifndef _NF_LOG_H
#define _NF_LOG_H

#include <linux/netfilter.h>

/* those NF_LOG_* defines and struct nf_loginfo are legacy definitios that will
 * disappear once iptables is replaced with pkttables.  Please DO NOT use them
 * for any new code! */
#define NF_LOG_TCPSEQ		0x01	/* Log TCP sequence numbers */
#define NF_LOG_TCPOPT		0x02	/* Log TCP options */
#define NF_LOG_IPOPT		0x04	/* Log IP options */
#define NF_LOG_UID		0x08	/* Log UID owning local socket */
#define NF_LOG_MASK		0x0f

enum nf_log_type {
	NF_LOG_TYPE_LOG		= 0,
	NF_LOG_TYPE_ULOG,
	NF_LOG_TYPE_MAX
};

struct nf_loginfo {
	u_int8_t type;
	union {
		struct {
			u_int32_t copy_len;
			u_int16_t group;
			u_int16_t qthreshold;
		} ulog;
		struct {
			u_int8_t level;
			u_int8_t logflags;
		} log;
	} u;
};

typedef void nf_logfn(struct net *net,
		      u_int8_t pf,
		      unsigned int hooknum,
		      const struct sk_buff *skb,
		      const struct net_device *in,
		      const struct net_device *out,
		      const struct nf_loginfo *li,
		      const char *prefix);

struct nf_logger {
	char			*name;
	enum nf_log_type	type;
	nf_logfn 		*logfn;
	struct module		*me;
};

/* Function to register/unregister log function. */
int nf_log_register(u_int8_t pf, struct nf_logger *logger);
void nf_log_unregister(struct nf_logger *logger);

void nf_log_set(struct net *net, u_int8_t pf,
		const struct nf_logger *logger);
void nf_log_unset(struct net *net, const struct nf_logger *logger);

int nf_log_bind_pf(struct net *net, u_int8_t pf,
		   const struct nf_logger *logger);
void nf_log_unbind_pf(struct net *net, u_int8_t pf);

int nf_logger_find_get(int pf, enum nf_log_type type);
void nf_logger_put(int pf, enum nf_log_type type);
void nf_logger_request_module(int pf, enum nf_log_type type);

#define MODULE_ALIAS_NF_LOGGER(family, type) \
	MODULE_ALIAS("nf-logger-" __stringify(family) "-" __stringify(type))

/* Calls the registered backend logging function */
__printf(8, 9)
void nf_log_packet(struct net *net,
		   u_int8_t pf,
		   unsigned int hooknum,
		   const struct sk_buff *skb,
		   const struct net_device *in,
		   const struct net_device *out,
		   const struct nf_loginfo *li,
		   const char *fmt, ...);

__printf(8, 9)
void nf_log_trace(struct net *net,
		  u_int8_t pf,
		  unsigned int hooknum,
		  const struct sk_buff *skb,
		  const struct net_device *in,
		  const struct net_device *out,
		  const struct nf_loginfo *li,
		  const char *fmt, ...);

struct nf_log_buf;

struct nf_log_buf *nf_log_buf_open(void);
__printf(2, 3) int nf_log_buf_add(struct nf_log_buf *m, const char *f, ...);
void nf_log_buf_close(struct nf_log_buf *m);

/* common logging functions */
int nf_log_dump_udp_header(struct nf_log_buf *m, const struct sk_buff *skb,
			   u8 proto, int fragment, unsigned int offset);
int nf_log_dump_tcp_header(struct nf_log_buf *m, const struct sk_buff *skb,
			   u8 proto, int fragment, unsigned int offset,
			   unsigned int logflags);
void nf_log_dump_sk_uid_gid(struct nf_log_buf *m, struct sock *sk);
void nf_log_dump_packet_common(struct nf_log_buf *m, u_int8_t pf,
			       unsigned int hooknum, const struct sk_buff *skb,
			       const struct net_device *in,
			       const struct net_device *out,
			       const struct nf_loginfo *loginfo,
			       const char *prefix);

#endif /* _NF_LOG_H */
Commit	Line	Data
f01ffbd6 PM	1	#ifndef _NF_LOG_H
	2	#define _NF_LOG_H
	3
ca735b3a EL	4	#include <linux/netfilter.h>
ca735b3a EL	5
f01ffbd6 PM	6	/* those NF_LOG_* defines and struct nf_loginfo are legacy definitios that will
	7	* disappear once iptables is replaced with pkttables. Please DO NOT use them
	8	* for any new code! */
	9	#define NF_LOG_TCPSEQ 0x01 /* Log TCP sequence numbers */
	10	#define NF_LOG_TCPOPT 0x02 /* Log TCP options */
	11	#define NF_LOG_IPOPT 0x04 /* Log IP options */
	12	#define NF_LOG_UID 0x08 /* Log UID owning local socket */
	13	#define NF_LOG_MASK 0x0f
	14
5962815a PNA	15	enum nf_log_type {
	16	NF_LOG_TYPE_LOG = 0,
	17	NF_LOG_TYPE_ULOG,
	18	NF_LOG_TYPE_MAX
	19	};
f01ffbd6 PM	20
	21	struct nf_loginfo {
	22	u_int8_t type;
	23	union {
	24	struct {
	25	u_int32_t copy_len;
	26	u_int16_t group;
	27	u_int16_t qthreshold;
	28	} ulog;
	29	struct {
	30	u_int8_t level;
	31	u_int8_t logflags;
	32	} log;
	33	} u;
	34	};
	35
8cdb46da HS	36	typedef void nf_logfn(struct net *net,
8cdb46da HS	37	u_int8_t pf,
f01ffbd6 PM	38	unsigned int hooknum,
	39	const struct sk_buff *skb,
	40	const struct net_device *in,
	41	const struct net_device *out,
	42	const struct nf_loginfo *li,
	43	const char *prefix);
	44
	45	struct nf_logger {
5962815a PNA	46	char *name;
	47	enum nf_log_type type;
	48	nf_logfn *logfn;
	49	struct module *me;
f01ffbd6 PM	50	};
	51
	52	/* Function to register/unregister log function. */
ca735b3a EL	53	int nf_log_register(u_int8_t pf, struct nf_logger *logger);
	54	void nf_log_unregister(struct nf_logger *logger);
	55
30e0c6a6 G	56	void nf_log_set(struct net *net, u_int8_t pf,
	57	const struct nf_logger *logger);
	58	void nf_log_unset(struct net net, const struct nf_logger logger);
	59
	60	int nf_log_bind_pf(struct net *net, u_int8_t pf,
	61	const struct nf_logger *logger);
	62	void nf_log_unbind_pf(struct net *net, u_int8_t pf);
f01ffbd6	63
fab4085f PNA	64	int nf_logger_find_get(int pf, enum nf_log_type type);
fab4085f PNA	65	void nf_logger_put(int pf, enum nf_log_type type);
960649d1	66	void nf_logger_request_module(int pf, enum nf_log_type type);
fab4085f PNA	67
	68	#define MODULE_ALIAS_NF_LOGGER(family, type) \
	69	MODULE_ALIAS("nf-logger-" __stringify(family) "-" __stringify(type))
	70
f01ffbd6	71	/* Calls the registered backend logging function */
30e0c6a6 G	72	__printf(8, 9)
	73	void nf_log_packet(struct net *net,
	74	u_int8_t pf,
f01ffbd6 PM	75	unsigned int hooknum,
	76	const struct sk_buff *skb,
	77	const struct net_device *in,
	78	const struct net_device *out,
7b2f9631	79	const struct nf_loginfo *li,
b9075fa9	80	const char *fmt, ...);
f01ffbd6	81
4017a7ee PNA	82	__printf(8, 9)
	83	void nf_log_trace(struct net *net,
	84	u_int8_t pf,
	85	unsigned int hooknum,
	86	const struct sk_buff *skb,
	87	const struct net_device *in,
	88	const struct net_device *out,
	89	const struct nf_loginfo *li,
	90	const char *fmt, ...);
	91
27fd8d90 PNA	92	struct nf_log_buf;
	93
	94	struct nf_log_buf *nf_log_buf_open(void);
	95	__printf(2, 3) int nf_log_buf_add(struct nf_log_buf m, const char f, ...);
	96	void nf_log_buf_close(struct nf_log_buf *m);
	97
83e96d44 PNA	98	/* common logging functions */
	99	int nf_log_dump_udp_header(struct nf_log_buf m, const struct sk_buff skb,
	100	u8 proto, int fragment, unsigned int offset);
	101	int nf_log_dump_tcp_header(struct nf_log_buf m, const struct sk_buff skb,
	102	u8 proto, int fragment, unsigned int offset,
	103	unsigned int logflags);
	104	void nf_log_dump_sk_uid_gid(struct nf_log_buf m, struct sock sk);
	105	void nf_log_dump_packet_common(struct nf_log_buf *m, u_int8_t pf,
	106	unsigned int hooknum, const struct sk_buff *skb,
	107	const struct net_device *in,
	108	const struct net_device *out,
	109	const struct nf_loginfo *loginfo,
	110	const char *prefix);
	111
f01ffbd6	112	#endif /* _NF_LOG_H */